Ready for part 2 of our Network Detective MPLS L3VPN Ride-Along? In part 1 we were presented with the “Case of the Failed L3VPN Ping”. We started, like any ping troubleshooting, on the IP subnets themselves – do they exist in the... Read More ›
The post Troubleshooting Basic MPLS L3VPN – Part 2 – MPLS appeared first on Networking with FISH.
You might be surprised by how few of the top tech employers are in the technology industry.
One of my readers listened to a podcast where a $vendor described how they found another use case for source routing IPv6 segment routing (SR): 5G networks… and wondered whether SR made a comeback or is about to.
To figure out what segment routing is, watch the webinar we did with Jeff Tantsura a while ago.
I don’t know nearly enough about mobile networks to have an opinion, however…
Read more ...I’m proud to announce that I’ve been selected as a finalist in the Cisco IT Blog Awards in the “most inspirational” category.
I’m happy to be in this category as I hope that my posts here have inspired others to learn about design, architecture and to have an open mindset towards technology.
If you want to vote for me, you can do that here. Thanks for your support!
The post Cisco IT Blog Awards Finalist appeared first on Daniels Networking Blog.
MadMax: surviving out-of-gas conditions in ethereum smart contracts Grech et al., OOPSLA’18
We’re transitioning to look at a selection of papers from the recent OOPSLA conference this week. MadMax won a distinguished paper award, and makes a nice bridge from the CCS blockchain papers we were looking at last week.
Analysis and verification of smart contracts is a high-value task, possibly more so than in any other programming setting. The combination of monetary value and public availability makes the early detection of vulnerabilities a task of paramount importance. (Detection may occur after contract deployment. Despite the code immutability, which prevents bug fixes, discovering a vulnerability before an attacker may exploit it could enable a trusted third party to move vulnerable funds to safety).
MadMax is in the same vein as Securify, performing EVM bytecode analysis using Datalog (also with Soufflé) to infer security issues in contracts. In this instance, MadMax focuses on detecting vulnerabilities caused by out-of-gas conditions. The paper touches on some nice reusable building blocks (e.g. Vandal). I could easily see Vandal + Soufflé becoming a standard foundation for powerful EVM-based smart contract analysis.
MadMax is available on GitHub at https://github.com/nevillegreech/MadMax.
MaxMax Continue reading
For a time, I was the designated dumb person who managed a Lotus Bloody Notes deployment. This includes the server and desktop application plus a range of internal developed apps. But mostly it was an really poor attempt at an email solution. The ‘bloody’ is my way of being polite It was horrible. Everything about […]
The post Lotus Bloody Notes/Domino Sold appeared first on EtherealMind.
Silver Peak SD-WAN. Routers Getting Routered – One of the Silver Peak’s Slogan for SD-WAN. First, let’s have a look at the video below that the Slogan of “Routers Getting Routered” seems marketing, but actually it has a technical meaning behind it. Video : Silver Peak Youtube Channel I attended the last …
Continue reading "Routers Getting Routered – Silver Peak SD-WAN"
The post Routers Getting Routered – Silver Peak SD-WAN appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
In the latest Network Break, Network Break 213 from Packet Pushers, they discussed some of the latest news in networking, such as Amazon Outpost. With the rise of SaaS applications, the questions was also raised, do I even need a WAN?
Let’s assume you are running Office365. Your e-mail and office application is in the cloud. You are using Salesforce for your CRM. You ERP is also cloud-hosted. You’ve moved pretty much all of your previously internal apps to the cloud. Do you still need a WAN? I would argue yes. Considering all the applications mentioned previously have been moved, what do we still have left?
All though we’ve been talking about paperless societies for ages, have you ever seen an office environment without a printer? Neither have I. Your printers likely need to reach a print server. Do you have Active Directory? Would you be comfortable putting it entirely in the cloud? How do you provision PC images? Do you use something like SCCM? Do you have lighting, doors, larms etc that are connected to the network? Are all of your stored files in the cloud? Probably not depending on how sensitive they are. Do your offices Continue reading
As the uncertainty around Cisco’s Viptela integration lifted last quarter, the enterprise access router market saw its first quarter of growth in five quarters.
SDxCentral Weekly Wrap for Dec. 7, 2018: Huawei deals with a new scandal, Symantec's shakeup continues, and more of what you missed this week.
BlueCat Networks offers a free add-on product to their DDI (DNS, DHCP, IPAM) product called Gateway. Gateway is a platform customers can use to create their own custom APIs that make sense for their business. Put another way, Gateway provides a REST API endpoint for other applications within the business to talk to. That makes for some interesting workflow capabilities.
The post BiB 067: Custom APIs For Business Logic With BlueCat Gateway appeared first on Packet Pushers.
The year-old startup, founded by former Intel president Renee James, is also partnering with Packet, Cloudflare, and other companies on 5G and edge computing proof of concepts.
Sprint names its first 5G markets for 2019; Telco Systems and Arm work on uCPE; and IBM sells software assets to HCL Technologies for $1.8 billion.
Both FirstNet and 5G require the company to "touch the towers," so a lot of the network upgrades help both initiatives.
As most know, Cumulus Linux was originally intended for data center switching and routing but over the years, our customer base has requested that we expand into the enterprise campus feature set too. Slowly, we’ve done just that.
With this expansion though, there are a few items that IT managers tend to take for granted in an all Cisco environment that may need some extra attention when using Cumulus Linux as a campus switch. This is especially the case when it comes to IEEE 802.1x, desk phones, etc.
Most of the phones we inter-operate with have been of the Cisco variety and quite often, those phones are connected to Cisco switches. There are a few tweaks from the default Cumulus settings that need to be called out in this environment and we’ll now go over what those are and how you can tweek them.
Cisco IP phones may revert to a different VLAN after initial negotiation. One of our enterprise customers found that according to a Cisco tech note on LLDP-MED and CDP, CDP should be disabled on non-Cisco switches connecting to Cisco phones.
To eliminate this behavior, make the following adjustment to the Continue reading
